var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
function LogOutput(target, key, descriptor) {
    console.log(target); //指向类 Car
    console.log(key); //指向函数名 add,descriptor.value 则指向该函数
    console.log(descriptor); //应该是指向 add 函数的描述符{configurable: true,enumerable: true,writable: true,value:fn}
}
var Car = /** @class */ (function () {
    function Car() {
        this.length = 20;
    }
    Car.prototype.add = function (num) {
        return num * 2;
    };
    __decorate([
        LogOutput
    ], Car.prototype, "add", null);
    return Car;
}());
var c1 = new Car();
c1.add(11);
